package com.itheima.service;

import com.itheima.mapper.UserMapper;
import com.itheima.pojo.User;
import com.itheima.util.SqlSessionFactoryUtils;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;

public class UserService {
    SqlSessionFactory sqlSessionFactory = SqlSessionFactoryUtils.getSqlSessionFactory();

    /*登录方法*/
    public User login(String username,String password){
        //2.获取对应的sqlSession
        SqlSession sqlSession = sqlSessionFactory.openSession();
        //3.获取对应的UserMapper
        UserMapper mapper = sqlSession.getMapper(UserMapper.class);
        //4.调用方法
        User user = mapper.select(username, password);

        //释放资源
        sqlSession.close();

        return user;
    }
    /*注册方法*/
    public boolean register(User user){
        //2.获取对应的sqlSession
        SqlSession sqlSession = sqlSessionFactory.openSession();
        //3.获取对应的UserMapper
        UserMapper mapper = sqlSession.getMapper(UserMapper.class);
        //4.调用方法
        User u = mapper.selectByUsername(user.getUsername());

        if (u==null){
            //用户名不存在
            mapper.add(user);
            //提交事务
            sqlSession.commit();
        }
        sqlSession.close();

        return u==null;
    }
}
